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A Comparison Between Publish-and-Subscribe and Client-Server Models in Distributed Control System NetworksThe BIO-Plex control system requires real-time, flexible, and reliable data delivery. There is no simple "off-the-shelf 'solution. However, several commercial packages will be evaluated using a testbed at ARC for publish- and-subscribe and client-server communication architectures. Point-to-point communication architecture is not suitable for real-time BIO-Plex control system. Client-server architecture provides more flexible data delivery. However, it does not provide direct communication among nodes on the network. Publish-and-subscribe implementation allows direct information exchange among nodes on the net, providing the best time-critical communication. In this work Network Data Delivery Service (NDDS) from Real-Time Innovations, Inc. ARTIE will be used to implement publish-and subscribe architecture. It offers update guarantees and deadlines for real-time data delivery. Bridgestone, a data acquisition and control software package from National Instruments, will be tested for client-server arrangement. A microwave incinerator located at ARC will be instrumented with a fieldbus network of control devices. BridgeVIEW will be used to implement an enterprise server. An enterprise network consisting of several nodes at ARC and a WAN connecting ARC and RISC will then be setup to evaluate proposed control system architectures. Several network configurations will be evaluated for fault tolerance, quality of service, reliability and efficiency. Data acquired from these network evaluation tests will then be used to determine preliminary design criteria for the BIO-Plex distributed control system.
Document ID
20020054226
Document Type
Conference Paper
Authors
Boulanger, Richard P., Jr. (Sverdrup Technology, Inc. Moffett Field, CA United States)
Kwauk, Xian-Min (Sverdrup Technology, Inc. Moffett Field, CA United States)
Stagnaro, Mike (NASA Johnson Space Center Houston, TX United States)
Kliss, Mark
Date Acquired
August 20, 2013
Publication Date
January 1, 1998
Subject Category
Computer Systems
Meeting Information
28th International Conference on Environmental Systems(Danvers, MA)
Funding Number(s)
PROJECT: RTOP 199-61-01
Distribution Limits
Public
Copyright
Other